Home / 10,389.62-15,575.16-3,814.28

Finding the Fourth Proportional to 10,389.62, 15,575.16 and 3,814.28

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Solution

The fourth proportional to 10,389.62, 15,575.16 and 3,814.28 is: 5,718.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,389.62 : 15,575.16 = 3,814.28 : x
  2. Step 2: Convert to fraction form
    10,389.62/15,575.16 = 3,814.28/x
  3. Step 3: Cross multiply
    10,389.62x = 15,575.16 × 3,814.28
  4. Step 4: Simplify right side
    10,389.62x = 59,408,021.28
  5. Step 5: Solve for x
    x = 59,408,021.28/10,389.62
  6. Step 6: Final answer
    x = 5,718.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.